INFO:2026-01-15T22:03:21Z:root:pulling...
From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   54da821ba97a..b501f666c5dc  main       -> origin/main
Switched to branch 'main'
Your branch is behind 'origin/main' by 1 commit, and can be fast-forwarded.
  (use "git pull" to update your local branch)
HEAD is now at b501f666c5dc [AMDGPU] Fix expensive checks in fmaak/fmamk f16 folding (#176238)
INFO:2026-01-15T22:03:24Z:root:syncing...
Deleted branch merge (was 54da821ba97a).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-01-15T22:03:25Z:root:building
ninja: Entering directory `out/gn'
[1/4829] AR lib/liblldbPluginScriptInterpreterNone.a
[2/4829] ACTION //libcxx/include:write_config_site(//llvm/utils/gn/build/toolchain:unix)
FAILED: include/c++/v1/__config_site 
python3 ../../llvm/utils/gn/build/write_cmake_config.py -o include/c++/v1/__config_site ../../libcxx/include/__config_site.in _LIBCPP_ABI_FORCE_ITANIUM= _LIBCPP_ABI_FORCE_MICROSOFT= _LIBCPP_ABI_VERSION=1 _LIBCPP_ASSERTION_SEMANTIC_DEFAULT=_LIBCPP_ASSERTION_SEMANTIC_HARDENING_DEPENDENT _LIBCPP_EXTRA_SITE_DEFINES= _LIBCPP_HAS_FILESYSTEM=1 _LIBCPP_HAS_THREADS=1 _LIBCPP_HAS_MONOTONIC_CLOCK=1 _LIBCPP_HAS_MUSL_LIBC= _LIBCPP_HAS_THREAD_API_PTHREAD= _LIBCPP_HAS_THREAD_API_EXTERNAL= _LIBCPP_HAS_THREAD_API_WIN32= _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS= _LIBCPP_HAS_VENDOR_AVAILABILITY_ANNOTATIONS= _LIBCPP_NO_VCRUNTIME= _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION= _LIBCPP_HAS_RANDOM_DEVICE=1 _LIBCPP_HAS_LOCALIZATION=1 _LIBCPP_HAS_UNICODE=1 _LIBCPP_HAS_WIDE_CHARACTERS=1 _LIBCPP_HAS_TERMINAL=1 _LIBCPP_INSTRUMENTED_WITH_ASAN= _LIBCPP_ABI_DEFINES= _LIBCPP_HARDENING_MODE_DEFAULT=_LIBCPP_HARDENING_MODE_NONE _LIBCPP_LIBC_PICOLIBC= _LIBCPP_LIBC_NEWLIB= _LIBCPP_PSTL_BACKEND_LIBDISPATCH= _LIBCPP_PSTL_BACKEND_SERIAL= _LIBCPP_PSTL_BACKEND_STD_THREAD=1 _LIBCPP_ABI_NAMESPACE=__1 _LIBCPP_HAS_TIME_ZONE_DATABASE=1
Traceback (most recent call last):
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 122, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 75, in main
    if values[var] == "0":
       ~~~~~~^^^^^
KeyError: '_LIBCPP_LIBC_LLVM_LIBC'
[3/4829] ACTION //lldb/source/Plugins:Plugins.def(//llvm/utils/gn/build/toolchain:unix)
[4/4829] CXX obj/lldb/source/Target/Target.JITLoaderList.o
[5/4829] CXX obj/lldb/source/Target/Target.MemoryRegionInfo.o
[6/4829] CXX obj/lldb/source/Target/Target.MemoryTagMap.o
[7/4829] CXX obj/lldb/source/Target/Target.SectionLoadHistory.o
[8/4829] CXX obj/lldb/source/Symbol/Symbol.CompilerDeclContext.o
[9/4829] CXX obj/lldb/source/Target/Target.BorrowedStackFrame.o
[10/4829] CXX obj/lldb/source/Target/Target.RegisterFlags.o
[11/4829] CXX obj/lldb/source/Symbol/Symbol.DeclVendor.o
[12/4829] CXX obj/lldb/source/Target/Target.PathMappingList.o
[13/4829] CXX obj/lldb/source/Target/Target.RegisterNumber.o
[14/4829] CXX obj/lldb/source/Target/Target.MemoryHistory.o
[15/4829] CXX obj/lldb/source/Symbol/Symbol.DebugMacros.o
[16/4829] CXX obj/lldb/source/Symbol/Symbol.VariableList.o
[17/4829] CXX obj/lldb/source/Target/Target.OperatingSystem.o
[18/4829] CXX obj/lldb/source/Target/Target.SectionLoadList.o
[19/4829] CXX obj/lldb/source/Target/Target.ModuleCache.o
[20/4829] CXX obj/lldb/source/Symbol/Symbol.UnwindTable.o
[21/4829] CXX obj/lldb/source/Symbol/Symbol.Block.o
[22/4829] CXX obj/lldb/source/Symbol/Symbol.TypeList.o
[23/4829] CXX obj/lldb/source/Symbol/Symbol.TypeMap.o
[24/4829] CXX obj/lldb/source/Target/Target.SyntheticFrameProvider.o
[25/4829] CXX obj/lldb/source/Target/Target.QueueItem.o
[26/4829] CXX obj/lldb/source/Symbol/Symbol.SymbolVendor.o
[27/4829] CXX obj/lldb/source/Target/Target.SystemRuntime.o
[28/4829] CXX obj/lldb/source/Target/Target.Queue.o
[29/4829] CXX obj/lldb/source/Target/Target.JITLoader.o
[30/4829] CXX obj/lldb/source/Target/Target.InstrumentationRuntimeStopInfo.o
[31/4829] CXX obj/lldb/source/Target/Target.ABI.o
[32/4829] CXX obj/lldb/source/Target/Target.ExecutionContext.o
[33/4829] CXX obj/lldb/source/Symbol/Symbol.SymbolFile.o
[34/4829] CXX obj/lldb/source/Target/Target.StackID.o
[35/4829] CXX obj/lldb/source/Target/Target.InstrumentationRuntime.o
[36/4829] CXX obj/lldb/source/Target/Target.QueueList.o
[37/4829] CXX obj/lldb/source/Target/Target.ProcessTrace.o
[38/4829] CXX obj/lldb/source/Target/Target.RemoteAwarePlatform.o
[39/4829] CXX obj/lldb/source/Symbol/Symbol.SymbolFileOnDemand.o
[40/4829] CXX obj/lldb/source/Symbol/Symbol.UnwindPlan.o
[41/4829] CXX obj/lldb/source/Target/Target.ScriptedThreadPlan.o
[42/4829] CXX obj/lldb/source/Target/Target.RegisterContext.o
[43/4829] CXX obj/lldb/source/Symbol/Symbol.TypeSystem.o
[44/4829] CXX obj/lldb/source/Target/Target.StructuredDataPlugin.o
[45/4829] CXX obj/lldb/source/Symbol/Symbol.SymbolLocator.o
[46/4829] CXX obj/lldb/source/Target/Target.ThreadList.o
[47/4829] CXX obj/lldb/source/Target/Target.Memory.o
[48/4829] CXX obj/lldb/source/Symbol/Symbol.FuncUnwinders.o
[49/4829] CXX obj/lldb/source/Target/Target.StackFrameRecognizer.o
[50/4829] CXX obj/lldb/source/Target/Target.LanguageRuntime.o
[51/4829] CXX obj/lldb/source/Symbol/Symbol.DWARFCallFrameInfo.o
[52/4829] CXX obj/lldb/source/Symbol/Symbol.Variable.o
[53/4829] CXX obj/lldb/source/Target/Target.TargetList.o
[54/4829] CXX obj/lldb/source/Target/Target.Platform.o
[55/4829] CXX obj/lldb/source/Symbol/Symbol.Type.o
[56/4829] CXX obj/lldb/source/Target/Target.StackFrameList.o
[57/4829] CXX obj/lldb/source/Target/Target.Language.o
[58/4829] CXX obj/lldb/source/Symbol/Symbol.CompilerType.o
[59/4829] CXX obj/lldb/source/Symbol/Symbol.SymbolContext.o
[60/4829] CXX obj/lldb/source/Symbol/Symbol.Symtab.o
[61/4829] CXX obj/lldb/source/Target/Target.StopInfo.o
[62/4829] CXX obj/lldb/source/Target/Target.RegisterContextUnwind.o
[63/4829] CXX obj/lldb/source/Symbol/Symbol.Function.o
[64/4829] CXX obj/lldb/source/Target/Target.StackFrame.o
[65/4829] CXX obj/lldb/source/Target/Target.Statistics.o
[66/4829] CXX obj/lldb/source/Target/Target.Process.o
[67/4829] CXX obj/lldb/source/Target/Target.Target.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.